<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

 <head>

  <title>CSS Writing Modes Test: clearance calculations</title>

  <!--
  This test is the verticalized version of
  http://test.csswg.org/suites/css2.1/latest/html4/clear-clearance-calculation-004.htm
  -->

  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
  <link rel="help" href="http://www.w3.org/TR/css-writing-modes-3/#vertical-layout" title="7.1 Principles of Layout in Vertical Writing Modes" />
  <link rel="match" href="clearance-calculations-vrl-008-ref.xht" />

  <meta content="image" name="flags" />
  <meta content="In this test, the right border edge of div#clearing-left must be on the left side of div#floated-left, i.e., 50px further on its left-hand side. That means that the margin-left of div#preceding-sibling must not collapse with the right margin of the div#clearing-left and clearance must be added such that clearance + margin-right of div#clearing-left = 50px, i.e., clearance = 50px - margin-right of div#clearing-left; therefore clearance is equal to 50px - 75px = - 25px." name="assert" />

  <style type="text/css"><![CDATA[
  html
    {
      height: 116px;
      writing-mode: vertical-rl;
    }

  div#preceding-sibling
    {
      margin-left: 25px;
      width: 25px;
    }

  div#floated-left
    {
      float: left;
      width: 50px;
    }

  div#clearing-left
    {
      background-color: green;
      clear: left;
      margin-left: 8px;
      margin-right: 75px;
      width: 100px;
    }

  div#reference-overlapped-red
    {
      background-color: red;
      height: 100px;
      position: absolute;
      right: 108px;
      top: 8px;
      width: 100px;
      z-index: -1;
    }
  ]]></style>

 </head>

 <body>

  <div id="preceding-sibling"></div>

  <div id="floated-left"></div>

  <div id="clearing-left"></div>

  <div><img src="support/pass-cdts-clearance-calculations.png" width="474" height="17" alt="Image download support must be enabled" /></div>

  <div id="reference-overlapped-red"></div>

 </body>
</html>